Converting intel RealSense D415 bag file to PCD

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I'm trying to convert a bag file generated from intel RealSense D415 to PCD (or any point cloud) that I can use and manipulate on CloudCompare. I'm using the command:

rosrun pcl_ros bag_to_pcd <input_file.bag> <topic> <output_directory>

It's actually executed but when I go to the output directory it's actually empty.

I'm using the bash shell on windows 10, and ROS Kinetic Desktop-Full Install.

BTW: I've used rosbag info file.bag to know the topics available in the bag file, and the output is below:

version:      2.0
duration:     10.3s
start:        Jan 01 1970 02:00:00.00 (0.00)
end:          Jan 01 1970 02:00:10.35 (10.35)
size:         416.7 MB
messages:     2328
compression:  lz4 [376/376 chunks; 59.66%]
uncompressed: 698.1 MB @ 67.5 MB/s
compressed:   416.5 MB @ 40.2 MB/s (59.66%)
types:        diagnostic_msgs/KeyValue  [cf57fdc6617a881a88c16e768132149c]
              geometry_msgs/Transform   [ac9eff44abf714214112b05d54a3cf9b]
              realsense_msgs/StreamInfo [311d7e24eac31bb87271d041bf70ff7d]
              sensor_msgs/CameraInfo    [c9a58c1b0b154e0e6da7578cb991d214]
              sensor_msgs/Image         [060021388200f6f0f447d0fcd9c64743]
              std_msgs/Float32          [73fcbf46b49191e672908e50842a83d4]
              std_msgs/String           [992ce8a1687cec8c8bd883ec73ca41d1]
              std_msgs/UInt32           [304a39449588c7f8ce2df6e8001c5fce]
topics:       /device_0/info                                                      8 msgs    : diagnostic_msgs/KeyValue
              /device_0/sensor_0/Depth_0/image/data                137 msgs    : sensor_msgs/Image
              /device_0/sensor_0/Depth_0/image/metadata           685 msgs    : diagnostic_msgs/KeyValue
              /device_0/sensor_0/Depth_0/info                                     1 msg     : realsense_msgs/StreamInfo
              /device_0/sensor_0/Depth_0/info/camera_info                 1 msg     : sensor_msgs/CameraInfo
              /device_0/sensor_0/Depth_0/tf/0                                     1 msg     : geometry_msgs/Transform
              /device_0/sensor_0/Infrared_1/image/data                       97 msgs    : sensor_msgs/Image
              /device_0/sensor_0/Infrared_1/image/metadata                485 msgs    : diagnostic_msgs/KeyValue
              /device_0/sensor_0/Infrared_1/info                                  1 msg     : realsense_msgs/StreamInfo
              /device_0/sensor_0/Infrared_1/info/camera_info                    1 msg     : sensor_msgs/CameraInfo
              /device_0/sensor_0/Infrared_1/tf/0                                  1 msg     : geometry_msgs/Transform
              /device_0/sensor_0/info                                             1 msg     : diagnostic_msgs/KeyValue
              /device_0/sensor_0/option/Asic Temperature/description              1 msg     : std_msgs/String
              /device_0/sensor_0/option/Asic Temperature/value                    1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Depth Units/description                   1 msg     : std_msgs/String
              /device_0/sensor_0/option/Depth Units/value                         1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Emitter Enabled/description               1 msg     : std_msgs/String
              /device_0/sensor_0/option/Emitter Enabled/value                     1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Enable Auto Exposure/description          1 msg     : std_msgs/String
              /device_0/sensor_0/option/Enable Auto Exposure/value                1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Enable Auto White Balance/description     1 msg     : std_msgs/String
              /device_0/sensor_0/option/Enable Auto White Balance/value           1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Error Polling Enabled/description         1 msg     : std_msgs/String
              /device_0/sensor_0/option/Error Polling Enabled/value               1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Exposure/description                      1 msg     : std_msgs/String
              /device_0/sensor_0/option/Exposure/value                            1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Frames Queue Size/description             1 msg     : std_msgs/String
              /device_0/sensor_0/option/Frames Queue Size/value                   1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Gain/description                          1 msg     : std_msgs/String
              /device_0/sensor_0/option/Gain/value                                1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Laser Power/description                   1 msg     : std_msgs/String
              /device_0/sensor_0/option/Laser Power/value                         1 msg     : std_msgs/Float32
              /device_0/sensor_0/option/Output Trigger Enabled/description        1 msg     : std_msgs/String
              /device_0/sensor_0/option/Output Trigger Enabled/value              1 ...